Studies on the synthesis of n - butyl lactate catalyzed by the composite solid superacid so42 - zro2 - al2o 固体超强酸在催化正己烷异构化反应中失活的研究
As the networks becoming more and more complex and heterogeneous , the problem of network management is getting more prominent 随着网络变得越来越复杂和异构化,网络管理问题日益突出。
Seeing that it ' s so far the only semi - work in the world , there is more new thinking on the work of engineering design 报导了2 -丁烯异构化反应、 1 -丁烯自身转化己烯异构化反应的生产工艺。
The separated alpha - acid and belta - acid are detected by ultaviolet spectrum , in good agreement with the results reported in the literatures 并对-酸进行异构化,提高了酒花浸膏中有效分的利用率。
In the solar energy transfer and storage system , the isomerization of norbornadiene and quadricyclane is an important reaction 摘要在太阳能转换与储存体系中,降冰片二烯光异构化合成四环烷是非常重要的一个反应。
This oil is characterized by relatively low isomerization ratios of steranes , but slightly higher density and viscosity than those of type 1 该类原油甾烷异构化指标偏低,粘度和密度相对高于第一类原油,但仍为稀油。
In order to make the atom economy more clear , the rearrangement reations addition reactions and isomerization reactions for examples were interpreted 通过有机化学反应中重排反应、加成反应和异构化反应等对原子经济性进行了探讨。
The relative stability of all stable geometric structures has been analyzed . the state - state correlation and the isomerization mechanism are predicted by searching the transition states 分析了各稳定构型的相对稳定性及成键特征,建立了态态相关并给出异构化过渡态,分析了各构型之间转化的途径。
Oil type 1 , non - biodegraded oil , is characterized by low viscosity , low density , high content of saturated fraction , low content of resin and asphaltene and high ratio of isomerization of steranes 第一类原油粘度和密度低,族组成以饱和烃组分为主,非烃和沥青组分含量低,甾烷异构化指标高,未遭受生物降解。
The oil of type 5 is the biodegraded one from the oil of type 3 , and characterized by a density and viscosity similar to type 4 . however , the isomerization ratio is lower in the type 5 than that in the type 4 第五类原油是由第三类原油生物降解的产物,原油密度和粘度与第四类原油相近,但甾烷异构化指标相对较低。